Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R). Assertion (A): Sexual reproduction is essential in plants for maintaining the continuity of the species for many generations. Reason (R): Sexual reproduction leads to genetic variation that enhances adaptability and evolutionary fitness.
a.
Both Assertion (A) and Reason (R) are true but (R) is NOT the correct explanation of Assertion (A).
b.
Assertion (A) is true, but Reason (R) is false.
c.
Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of Assertion (A).
Correct Answer
d.
Assertion (A) is false, but Reason (R) is true.
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Q2mcq
The Law of Constant Proportions applies to the:
a.
Pure chemical compounds
Correct Answer
b.
Mixtures of substances
c.
Elements
d.
Both mixtures and compounds
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Q3mcq
The forces of attraction between particles are _________ in solids, __________ in liquids, and _________ in gases.
a.
maximum, minimum, minimum
b.
maximum, intermediate, maximum
c.
maximum, minimum, intermediate
d.
maximum, intermediate, minimum
Correct Answer
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Q4mcq
Which alcohol is commonly used as fuel?
a.
Butanol
b.
Propanol
c.
Methanol
d.
Ethanol Test Date 09/01/2026 Test Time 9:00 AM - 10:30 AM Subject RRB Level 01 Stage I * Note Correct Answer will carry 1 mark per Question. Incorrect Answer will carry 1/3 Negative mark per Question. 1. Options shown in green color with a tick icon are correct. 2. Chosen option on the right of the question indicates the option selected by the candidate.
Correct Answer
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Q12mcq
The alveoli are surrounded by an extensive network of __________, where the exchange of __________ takes place.
a.
nerves; impulses
b.
capillaries; gases
Correct Answer
c.
muscles; pressure
d.
bronchi; air
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Q13mcq
Which of the following methods is used to separate particles from a suspension?
a.
Crystallization
b.
Evaporation
c.
Distillation
d.
Filtration
Correct Answer
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Q14mcq
Plastids are absent in which of the following cells?
a.
Stem cells
b.
Muscle cells
Correct Answer
c.
Root cells
d.
Leaf cells
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Q15mcq
A food chain starts from grass → grasshopper → frog → snake → hawk. How much concentration of non-biodegradable pesticides is expected in hawk?
a.
The lowest amount of pesticide residue
b.
The highest concentration of pesticides
Correct Answer
c.
Equal concentration of pesticide as in the frog
d.
No pesticide residue at all
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Q16mcq
Which of the following statements about average speed is INCORRECT?
a.
It is total distance divided by total time.
b.
It is change in distance divided by change in velocity.
Correct Answer
c.
It is measured in m/s.
d.
It does not depend on the direction of motion.
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Q17mcq
When an object is placed in a fluid, it feels an upward force called buoyancy. On which factor does the magnitude of this buoyant force depend?
a.
The shape of the object
b.
The weight of the object only
c.
The density of the fluid
Correct Answer
d.
The colour of the object
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A current I ampere flows through a metallic wire of resistance X Ω when a potential difference V volt is applied across its ends. Which of the following is the correct relation between X, I and V?
a.
X = I + V
b.
X = I – V
c.
X = I/V
d.
X = V/I
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